From employee referral, contacted via email then quick 10 minute recruiter phone screening (no technical questions). Flown out for an on-site interview, accommodations arranged by the company. On-site had two stages: 1) A couple hours to make a simple Android app, given a few very loose specs/ideas to choose from. Then present the app and code to panel of Android engineers and answer questions about design decisions and Android in general. 2) Two one-on-one whiteboard coding interviews. Standard whiteboard questions similar in difficulty/depth to what one might see at an on-site Google interview. It was a fun interview. I had a great time even though I didn't get an offer.

The interview process was kind of weird, especially at the end. First I talked to recruiter over the phone to describe my current position after that they scheduled a phone interview that I passed then I had my onsite interview and after that another phone interview with a Director. After passing all of the interviews the recruiter sent me an email saying the job opening was not longer available and I was not ready for a senior position.